Drainage-trap



J. SHAW, Sr.

(No Model.)

DRAINAGE TRAP.

No. 399,442. Patented Mar. 12, 1889.

A TTORNEYS.

N. PETERS. PhoXn-Lithngmphur. Washingkm n. c.

tJNiTnn STATES PATENT @TTICE.

JOHN SIIAXV, SR, OF BAYONNE, NE JERSEY.

DRAI NAG E-TRAP.

SPECIFICATION forming part of Letters Patent No. 399,442, dated March 12, 1889.

Application filed September 24, 1888. Serial No. 286,194- (No model.)

To all whom it may concern:

Be it known that 1, JOHN SHAW, Six, of Bayonne, in the county of Hudson and State of New Jersey, have invented a new and Improved Drainage-Trap, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved drainage-trap, which. is simple and durable in construction and very effective in operation, discl'larging the water of condensation automatically whenever a certain quantity has accumulated.

The invention consists of a float operating in a casing and controllingapiston connected with the outlet-valve.

The invention also consists in certain parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is 'to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement. Fig. 2 is a transverse section of the same on the line a x of Fig. 1, and Fig. 3 is a sectional plan view of the same on the line y y of Fig. 1.

The improved drainage-trap is provided with a casing, A, having on one side a channel, 1-3, connected at its upper end with an inlet-pipe, 0, leading to the steam-supply. The channel B is connected with the interior of the casing A by an aperture, D, formed in the wall of the channel B a short distance below the inlet-pipe C. In the bottom of the channel B is formed another opening, E, also leading into the interior of the casingA near its bottom. Opposite the aperture E is placed a blow-oft pipe, 1*, closed by a suitable valve in the usual manner until it is desirable to clean the casing A from sediment.

A short distance above the bottom of the casing A is formed an offset, A, in which opens the water-outlet pipe G, provided at its upper end with a valve-seat, G, in which fits a valve, H, opening inward and of any approved construction. The valve II is secured on a piston-rod, I, connected with the piston J, mounted to slide vertically in a cylinder,

K, supported on a bracket, L, fastened in the casing A.

On the cylinder K is formed a valve chest, N, in which operates a valve, 0, adapted to open and close the ports a and 1), leading to the top and bottom of the cylinder K, respect ivcly. The valve 0 also controls the outletport 0, passing through the bracket L to the outside of the casin g. The valve O is mounted to turn in the valve-chest N, and is provided with a valve-stem, O, carrying an arm, P, pivotally connected by a link, Q, with the short arm. of a bellcrank lever, R, fulcrumed on the bracket L and pivotally connected with arod, S, provided with two collars, S and S between which travels a float, T, guided in the vertical guide-rods U, secured to the bottom of the casing A. The float T is provided in its center with a pipe, T through which passes the rod S, as is plainly shown in Fig. 1.

The operation is as follows: The steam entering through the inlet-pipe passes into the channel 15 and through the openings D and E into the interior of the casing A. The water of condensation accumulates in the easing A, finally closing the opening E, so that all the steam passes through the aperture 1). The float T rises with the water in the casing A until it strikes against the collar S on the rod S. \Vhen the water now accumulates further in the casing A, the said float T presses against the collarS, so that the rod S is moved upward, the bell-crank lever B is turned, and the valve 0 is shift-ed, uncovering the inletport a, wherebysteam passes from the casing A into the bottom of the cylinder K and acts against the under side of the piston J,whercby the latter is raised and the valve II is 1111' sea-ted from its seat G. The accumulated water of condensation now flows out through the pipe G until it reaches the level of the oifset A. The float T naturally sinks with the water and operates on the collar shortly before the water reaches the level of the seat G in the offset A. The rod S is thus moved downward, the bell-crank lever R is swung, and the valve 0 is turned so as to uncover the other inlet-port, 11, whereby steam passes to the top of the cylinder K and forces the piston .T downward, therebyagain seating the valve II on its seat G. The pipe G is thus closed and the water of condensation can again accumulate in the casing A. The exhaust from the cylinder K always takes place through the outlet-port c in the usual manner.

The valve-seat G of the pipe G is located somewhat above the bottom of the casing A to prevent the sediment from passing into the pipe G. The sediment settles in the bottom of the casing and can be removed by opening the valve in the blow-out pipe F in the usual manner.

Thus it will be seen that the drainage-trap automatically discharges the water of con densation whenever a sufficient: quantity has accuinulated.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a drain age-trap, the combina ion, with a cylinder provided with a valve-chest and inlet and outlet ports, of a piston held to travel in the said cylinder, an outletvalve supported on the said piston, a valx e held to swing in the said valve-chest and operating over the said ports, and a float operating the said valve, substantially as shown and described.

2. In a drainage-trap, the combination,with a casing provided with an inlet and an outlet, of a valve seated in the said outlet, a piston supporting the said valve, a oylin dercontaining said piston and provided with a valvechest and inlet and outlet ports, a valve held in the said valve-chest and operating over the said ports, a rod connected with the said valve and provided with collars, and a float traveling on the said rod between the said collars, substantially as shown and described.

3. The combination, with a casing provided with an inlet and an outlet pipe, of a valve seated in the said outlet-pipe and opening inward in the said casing, a piston-rod supporting said valve, a piston connected with the said piston-rod, a cylinder containing said piston and provided with inlet and outlet ports, and also with a valve-chest, a valve held to turn in the said valve-chest and operating over the said ports, a bell-crank lever connected with the said valve, a rod pivotally connected with the said bell-crank lever and provided with collars, and a float held to travel on the said rod between the said collars, substantially as shown and described.

4. The combination, with a casing provided with an inlet and an outlet pipe, of a valve seated in the said outlet-pipe and opening inward in the casing, a piston-rod supporting said valve, apiston connected with the said piston-rod, a cylinder containing said piston and provided with inlet and outlet ports and also with a valve-chest, avalve held to turn in the said valve-chest and operating over the said ports, a bell-crank lever connected With the said valve, a rod pivotally connected with the said bell-crank lever and provided with collars, and a float held to travel on the said rod between the said'collars, and guide-rods held in the said casing for guiding said float, substantially as shown and described.

JOHN SHAlV, SR. Vitnesses: THEo. G. HostrER,

1. SEDGWIoK. 

